arch/arm/mach-imx/spl.c - uboot-imx - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2014 Gateworks Corporation
  * Copyright (C) 2011-2012 Freescale Semiconductor, Inc.
  *
  * Author: Tim Harvey <tharvey@gateworks.com>
  */

 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/spl.h>
 #include <spl.h>
 #include <asm/mach-imx/hab.h>
 #include <asm/mach-imx/boot_mode.h>
 #include <g_dnl.h>

 DECLARE_GLOBAL_DATA_PTR;

 #if defined(CONFIG_MX6)
 /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
 u32 spl_boot_device(void)
 {
 	unsigned int bmode = readl(&src_base->sbmr2);
 	u32 reg = imx6_src_get_boot_mode();

 	/*
 	 * Check for BMODE if serial downloader is enabled
 	 * BOOT_MODE - see IMX6DQRM Table 8-1
 	 */
 	if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
 		return BOOT_DEVICE_BOARD;

 	/*
 	 * The above method does not detect that the boot ROM used
 	 * serial downloader in case the boot ROM decided to use the
 	 * serial downloader as a fall back (primary boot source failed).
 	 *
 	 * Infer that the boot ROM used the USB serial downloader by
 	 * checking whether the USB PHY is currently active... This
 	 * assumes that SPL did not (yet) initialize the USB PHY...
 	 */
 	if (is_usbotg_phy_active())
 		return BOOT_DEVICE_BOARD;

 	/* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
 	switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
 	 /* EIM: See 8.5.1, Table 8-9 */
 	case IMX6_BMODE_EMI:
 		/* BOOT_CFG1[3]: NOR/OneNAND Selection */
 		switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) {
 		case IMX6_BMODE_ONENAND:
 			return BOOT_DEVICE_ONENAND;
 		case IMX6_BMODE_NOR:
 			return BOOT_DEVICE_NOR;
 		break;
 		}
 	/* Reserved: Used to force Serial Downloader */
 	case IMX6_BMODE_RESERVED:
 		return BOOT_DEVICE_BOARD;
 	/* SATA: See 8.5.4, Table 8-20 */
 #if !defined(CONFIG_MX6UL) && !defined(CONFIG_MX6ULL)
 	case IMX6_BMODE_SATA:
 		return BOOT_DEVICE_SATA;
 #endif
 	/* Serial ROM: See 8.5.5.1, Table 8-22 */
 	case IMX6_BMODE_SERIAL_ROM:
 		/* BOOT_CFG4[2:0] */
 		switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >>
 			IMX6_BMODE_SERIAL_ROM_SHIFT) {
 		case IMX6_BMODE_ECSPI1:
 		case IMX6_BMODE_ECSPI2:
 		case IMX6_BMODE_ECSPI3:
 		case IMX6_BMODE_ECSPI4:
 		case IMX6_BMODE_ECSPI5:
 			return BOOT_DEVICE_SPI;
 		case IMX6_BMODE_I2C1:
 		case IMX6_BMODE_I2C2:
 		case IMX6_BMODE_I2C3:
 			return BOOT_DEVICE_I2C;
 		}
 		break;
 	/* SD/eSD: 8.5.3, Table 8-15  */
 	case IMX6_BMODE_SD:
 	case IMX6_BMODE_ESD:
 		return BOOT_DEVICE_MMC1;
 	/* MMC/eMMC: 8.5.3 */
 	case IMX6_BMODE_MMC:
 	case IMX6_BMODE_EMMC:
 		return BOOT_DEVICE_MMC1;
 	/* NAND Flash: 8.5.2, Table 8-10 */
 	case IMX6_BMODE_NAND_MIN ... IMX6_BMODE_NAND_MAX:
 		return BOOT_DEVICE_NAND;
 	}
 	return BOOT_DEVICE_NONE;
 }

 #elif defined(CONFIG_MX7) || defined(CONFIG_IMX8M) || defined(CONFIG_IMX8)
 /* Translate iMX7/i.MX8M boot device to the SPL boot device enumeration */
 u32 spl_boot_device(void)
 {
 #if defined(CONFIG_MX7)
 	unsigned int bmode = readl(&src_base->sbmr2);

 	/*
 	 * Check for BMODE if serial downloader is enabled
 	 * BOOT_MODE - see IMX7DRM Table 6-24
 	 */
 	if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
 		return BOOT_DEVICE_BOARD;

 	/*
 	 * The above method does not detect that the boot ROM used
 	 * serial downloader in case the boot ROM decided to use the
 	 * serial downloader as a fall back (primary boot source failed).
 	 *
 	 * Infer that the boot ROM used the USB serial downloader by
 	 * checking whether the USB PHY is currently active... This
 	 * assumes that SPL did not (yet) initialize the USB PHY...
 	 */
 	if (is_boot_from_usb())
 		return BOOT_DEVICE_BOARD;
 #endif

 	enum boot_device boot_device_spl = get_boot_device();

 	switch (boot_device_spl) {
 #if defined(CONFIG_MX7)
 	case SD1_BOOT:
 	case MMC1_BOOT:
 	case SD2_BOOT:
 	case MMC2_BOOT:
 	case SD3_BOOT:
 	case MMC3_BOOT:
 		return BOOT_DEVICE_MMC1;
 #elif defined(CONFIG_IMX8)
 	case MMC1_BOOT:
 		return BOOT_DEVICE_MMC1;
 	case SD2_BOOT:
 		return BOOT_DEVICE_MMC2_2;
 	case SD3_BOOT:
 		return BOOT_DEVICE_MMC1;
 	case FLEXSPI_BOOT:
 		return BOOT_DEVICE_SPI;
 #elif defined(CONFIG_IMX8M)
 	case SD1_BOOT:
 	case MMC1_BOOT:
 		return BOOT_DEVICE_MMC1;
 #if defined(CONFIG_IMX8MM)
 	case SD2_BOOT:
 	case MMC2_BOOT:
 		return BOOT_DEVICE_MMC1;
 	case SD3_BOOT:
 	case MMC3_BOOT:
 		return BOOT_DEVICE_MMC2;
 #else
 	case SD2_BOOT:
 	case MMC2_BOOT:
 		return BOOT_DEVICE_MMC2;
 #endif
 #endif
 	case NAND_BOOT:
 		return BOOT_DEVICE_NAND;
 	case SPI_NOR_BOOT:
 		return BOOT_DEVICE_SPI;
 	case USB_BOOT:
 		return BOOT_DEVICE_BOARD;
 	default:
 		return BOOT_DEVICE_NONE;
 	}
 }
 #endif /* CONFIG_MX7 || CONFIG_IMX8M || CONFIG_IMX8 */

 #ifdef CONFIG_SPL_USB_GADGET
 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 {
 	put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM + 0xfff, &dev->idProduct);

 	return 0;
 }

 #define SDPV_BCD_DEVICE 0x500
 int g_dnl_get_board_bcd_device_number(int gcnum)
 {
 	return SDPV_BCD_DEVICE;
 }
 #endif

 #if defined(CONFIG_SPL_MMC_SUPPORT)
 /* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
 u32 spl_boot_mode(const u32 boot_device)
 {
 #if defined(CONFIG_MX7) || defined(CONFIG_IMX8M) || defined(CONFIG_IMX8)
 	switch (get_boot_device()) {
 	/* for MMC return either RAW or FAT mode */
 	case SD1_BOOT:
 	case SD2_BOOT:
 	case SD3_BOOT:
 #if defined(CONFIG_SPL_FAT_SUPPORT)
 		return MMCSD_MODE_FS;
 #else
 		return MMCSD_MODE_RAW;
 #endif
 		break;
 	case MMC1_BOOT:
 	case MMC2_BOOT:
 	case MMC3_BOOT:
 #if defined(CONFIG_SPL_FAT_SUPPORT)
 		return MMCSD_MODE_FS;
 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
 		return MMCSD_MODE_EMMCBOOT;
 #else
 		return MMCSD_MODE_RAW;
 #endif
 		break;
 	default:
 		puts("spl: ERROR:  unsupported device\n");
 		hang();
 	}

 #else /* defined(CONFIG_MX7) || defined(CONFIG_IMX8M) */
 	switch (spl_boot_device()) {
 	/* for MMC return either RAW or FAT mode */
 	case BOOT_DEVICE_MMC1:
 	case BOOT_DEVICE_MMC2:
 	case BOOT_DEVICE_MMC2_2:
 #if defined(CONFIG_SPL_FS_FAT)
 		return MMCSD_MODE_FS;
 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
 		return MMCSD_MODE_EMMCBOOT;
 #else
 		return MMCSD_MODE_RAW;
 #endif
 		break;
 	default:
 		puts("spl: ERROR:  unsupported device\n");
 		hang();
 	}
 #endif
 }
 #endif

 #if defined(CONFIG_SECURE_BOOT)

 /*
  * +------------+  0x0 (DDR_UIMAGE_START) -
  * |   Header   |                          |
  * +------------+  0x40                    |
  * |            |                          |
  * |            |                          |
  * |            |                          |
  * |            |                          |
  * | Image Data |                          |
  * .            |                          |
  * .            |                           > Stuff to be authenticated ----+
  * .            |                          |                                |
  * |            |                          |                                |
  * |            |                          |                                |
  * +------------+                          |                                |
  * |            |                          |                                |
  * | Fill Data  |                          |                                |
  * |            |                          |                                |
  * +------------+ Align to ALIGN_SIZE      |                                |
  * |    IVT     |                          |                                |
  * +------------+ + IVT_SIZE              -                                 |
  * |            |                                                           |
  * |  CSF DATA  | <---------------------------------------------------------+
  * |            |
  * +------------+
  * |            |
  * | Fill Data  |
  * |            |
  * +------------+ + CSF_PAD_SIZE
  */

 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 {
 	typedef void __noreturn (*image_entry_noargs_t)(void);
 	uint32_t offset;

 	image_entry_noargs_t image_entry =
 		(image_entry_noargs_t)(unsigned long)spl_image->entry_point;

 	debug("image entry point: 0x%lX\n", spl_image->entry_point);

 	if (spl_image->flags & SPL_FIT_FOUND) {
 		image_entry();
 	} else {
 		/*
 		 * HAB looks for the CSF at the end of the authenticated
 		 * data therefore, we need to subtract the size of the
 		 * CSF from the actual filesize
 		 */
 		offset = spl_image->size - CONFIG_CSF_SIZE;
 		if (!imx_hab_authenticate_image(spl_image->load_addr,
 						offset + IVT_SIZE +
 						CSF_PAD_SIZE, offset)) {
 			image_entry();
 		} else {
 			puts("spl: ERROR:  image authentication fail\n");
 			hang();
 		}
 	}
 }

 ulong board_spl_fit_size_align(ulong size)
 {
 	/*
 	 * HAB authenticate_image requests the IVT offset is
 	 * aligned to 0x1000
 	 */

 	size = ALIGN(size, 0x1000);
 	size += CONFIG_CSF_SIZE;

 	return size;
 }

 void board_spl_fit_post_load(ulong load_addr, size_t length)
 {
 	u32 offset = length - CONFIG_CSF_SIZE;

 	if (imx_hab_authenticate_image(load_addr,
 				       offset + IVT_SIZE + CSF_PAD_SIZE,
 				       offset)) {
 		puts("spl: ERROR:  image authentication unsuccessful\n");
 		hang();
 	}
 }

 void* board_spl_fit_buffer_addr(ulong fit_size, int bl_len)
 {
 	int align_len = ARCH_DMA_MINALIGN - 1;

 	/* Some devices like SDP, NOR, NAND, SPI are using bl_len =1, so their fit address
 	 * is different with SD/MMC, this cause mismatch with signed address. Thus, adjust
 	 * the bl_len to align with SD/MMC.
 	 */
 	if (bl_len < 512)
 		bl_len = 512;

 	return  (void *)((CONFIG_SYS_TEXT_BASE - fit_size - bl_len -
 			align_len) & ~align_len);
 }
 #endif

 #if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
 int dram_init_banksize(void)
 {
 	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	gd->bd->bi_dram[0].size = imx_ddr_size();

 	return 0;
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2014 Gateworks Corporation
	* Copyright (C) 2011-2012 Freescale Semiconductor, Inc.
	*
	* Author: Tim Harvey <tharvey@gateworks.com>
	*/

	#include <common.h>
	#include <asm/io.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/sys_proto.h>
	#include <asm/spl.h>
	#include <spl.h>
	#include <asm/mach-imx/hab.h>
	#include <asm/mach-imx/boot_mode.h>
	#include <g_dnl.h>

	DECLARE_GLOBAL_DATA_PTR;

	#if defined(CONFIG_MX6)
	/* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
	u32 spl_boot_device(void)
	{
	unsigned int bmode = readl(&src_base->sbmr2);
	u32 reg = imx6_src_get_boot_mode();

	/*
	* Check for BMODE if serial downloader is enabled
	* BOOT_MODE - see IMX6DQRM Table 8-1
	*/
	if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
	return BOOT_DEVICE_BOARD;

	/*
	* The above method does not detect that the boot ROM used
	* serial downloader in case the boot ROM decided to use the
	* serial downloader as a fall back (primary boot source failed).
	*
	* Infer that the boot ROM used the USB serial downloader by
	* checking whether the USB PHY is currently active... This
	* assumes that SPL did not (yet) initialize the USB PHY...
	*/
	if (is_usbotg_phy_active())
	return BOOT_DEVICE_BOARD;

	/* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
	switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
	/* EIM: See 8.5.1, Table 8-9 */
	case IMX6_BMODE_EMI:
	/* BOOT_CFG1[3]: NOR/OneNAND Selection */
	switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) {
	case IMX6_BMODE_ONENAND:
	return BOOT_DEVICE_ONENAND;
	case IMX6_BMODE_NOR:
	return BOOT_DEVICE_NOR;
	break;
	}
	/* Reserved: Used to force Serial Downloader */
	case IMX6_BMODE_RESERVED:
	return BOOT_DEVICE_BOARD;
	/* SATA: See 8.5.4, Table 8-20 */
	#if !defined(CONFIG_MX6UL) && !defined(CONFIG_MX6ULL)
	case IMX6_BMODE_SATA:
	return BOOT_DEVICE_SATA;
	#endif
	/* Serial ROM: See 8.5.5.1, Table 8-22 */
	case IMX6_BMODE_SERIAL_ROM:
	/* BOOT_CFG4[2:0] */
	switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >>
	IMX6_BMODE_SERIAL_ROM_SHIFT) {
	case IMX6_BMODE_ECSPI1:
	case IMX6_BMODE_ECSPI2:
	case IMX6_BMODE_ECSPI3:
	case IMX6_BMODE_ECSPI4:
	case IMX6_BMODE_ECSPI5:
	return BOOT_DEVICE_SPI;
	case IMX6_BMODE_I2C1:
	case IMX6_BMODE_I2C2:
	case IMX6_BMODE_I2C3:
	return BOOT_DEVICE_I2C;
	}
	break;
	/* SD/eSD: 8.5.3, Table 8-15 */
	case IMX6_BMODE_SD:
	case IMX6_BMODE_ESD:
	return BOOT_DEVICE_MMC1;
	/* MMC/eMMC: 8.5.3 */
	case IMX6_BMODE_MMC:
	case IMX6_BMODE_EMMC:
	return BOOT_DEVICE_MMC1;
	/* NAND Flash: 8.5.2, Table 8-10 */
	case IMX6_BMODE_NAND_MIN ... IMX6_BMODE_NAND_MAX:
	return BOOT_DEVICE_NAND;
	}
	return BOOT_DEVICE_NONE;
	}

	#elif defined(CONFIG_MX7) \|\| defined(CONFIG_IMX8M) \|\| defined(CONFIG_IMX8)
	/* Translate iMX7/i.MX8M boot device to the SPL boot device enumeration */
	u32 spl_boot_device(void)
	{
	#if defined(CONFIG_MX7)
	unsigned int bmode = readl(&src_base->sbmr2);

	/*
	* Check for BMODE if serial downloader is enabled
	* BOOT_MODE - see IMX7DRM Table 6-24
	*/
	if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
	return BOOT_DEVICE_BOARD;

	/*
	* The above method does not detect that the boot ROM used
	* serial downloader in case the boot ROM decided to use the
	* serial downloader as a fall back (primary boot source failed).
	*
	* Infer that the boot ROM used the USB serial downloader by
	* checking whether the USB PHY is currently active... This
	* assumes that SPL did not (yet) initialize the USB PHY...
	*/
	if (is_boot_from_usb())
	return BOOT_DEVICE_BOARD;
	#endif

	enum boot_device boot_device_spl = get_boot_device();

	switch (boot_device_spl) {
	#if defined(CONFIG_MX7)
	case SD1_BOOT:
	case MMC1_BOOT:
	case SD2_BOOT:
	case MMC2_BOOT:
	case SD3_BOOT:
	case MMC3_BOOT:
	return BOOT_DEVICE_MMC1;
	#elif defined(CONFIG_IMX8)
	case MMC1_BOOT:
	return BOOT_DEVICE_MMC1;
	case SD2_BOOT:
	return BOOT_DEVICE_MMC2_2;
	case SD3_BOOT:
	return BOOT_DEVICE_MMC1;
	case FLEXSPI_BOOT:
	return BOOT_DEVICE_SPI;
	#elif defined(CONFIG_IMX8M)
	case SD1_BOOT:
	case MMC1_BOOT:
	return BOOT_DEVICE_MMC1;
	#if defined(CONFIG_IMX8MM)
	case SD2_BOOT:
	case MMC2_BOOT:
	return BOOT_DEVICE_MMC1;
	case SD3_BOOT:
	case MMC3_BOOT:
	return BOOT_DEVICE_MMC2;
	#else
	case SD2_BOOT:
	case MMC2_BOOT:
	return BOOT_DEVICE_MMC2;
	#endif
	#endif
	case NAND_BOOT:
	return BOOT_DEVICE_NAND;
	case SPI_NOR_BOOT:
	return BOOT_DEVICE_SPI;
	case USB_BOOT:
	return BOOT_DEVICE_BOARD;
	default:
	return BOOT_DEVICE_NONE;
	}
	}
	#endif /* CONFIG_MX7 \|\| CONFIG_IMX8M \|\| CONFIG_IMX8 */

	#ifdef CONFIG_SPL_USB_GADGET
	int g_dnl_bind_fixup(struct usb_device_descriptor dev, const char name)
	{
	put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM + 0xfff, &dev->idProduct);

	return 0;
	}

	#define SDPV_BCD_DEVICE 0x500
	int g_dnl_get_board_bcd_device_number(int gcnum)
	{
	return SDPV_BCD_DEVICE;
	}
	#endif

	#if defined(CONFIG_SPL_MMC_SUPPORT)
	/* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
	u32 spl_boot_mode(const u32 boot_device)
	{
	#if defined(CONFIG_MX7) \|\| defined(CONFIG_IMX8M) \|\| defined(CONFIG_IMX8)
	switch (get_boot_device()) {
	/* for MMC return either RAW or FAT mode */
	case SD1_BOOT:
	case SD2_BOOT:
	case SD3_BOOT:
	#if defined(CONFIG_SPL_FAT_SUPPORT)
	return MMCSD_MODE_FS;
	#else
	return MMCSD_MODE_RAW;
	#endif
	break;
	case MMC1_BOOT:
	case MMC2_BOOT:
	case MMC3_BOOT:
	#if defined(CONFIG_SPL_FAT_SUPPORT)
	return MMCSD_MODE_FS;
	#elif defined(CONFIG_SUPPORT_EMMC_BOOT)
	return MMCSD_MODE_EMMCBOOT;
	#else
	return MMCSD_MODE_RAW;
	#endif
	break;
	default:
	puts("spl: ERROR: unsupported device\n");
	hang();
	}

	#else /* defined(CONFIG_MX7) \|\| defined(CONFIG_IMX8M) */
	switch (spl_boot_device()) {
	/* for MMC return either RAW or FAT mode */
	case BOOT_DEVICE_MMC1:
	case BOOT_DEVICE_MMC2:
	case BOOT_DEVICE_MMC2_2:
	#if defined(CONFIG_SPL_FS_FAT)
	return MMCSD_MODE_FS;
	#elif defined(CONFIG_SUPPORT_EMMC_BOOT)
	return MMCSD_MODE_EMMCBOOT;
	#else
	return MMCSD_MODE_RAW;
	#endif
	break;
	default:
	puts("spl: ERROR: unsupported device\n");
	hang();
	}
	#endif
	}
	#endif

	#if defined(CONFIG_SECURE_BOOT)

	/*
	* +------------+ 0x0 (DDR_UIMAGE_START) -
	* \| Header \| \|
	* +------------+ 0x40 \|
	* \| \| \|
	* \| \| \|
	* \| \| \|
	* \| \| \|
	* \| Image Data \| \|
	* . \| \|
	* . \| > Stuff to be authenticated ----+
	* . \| \| \|
	* \| \| \| \|
	* \| \| \| \|
	* +------------+ \| \|
	* \| \| \| \|
	* \| Fill Data \| \| \|
	* \| \| \| \|
	* +------------+ Align to ALIGN_SIZE \| \|
	* \| IVT \| \| \|
	* +------------+ + IVT_SIZE - \|
	* \| \| \|
	* \| CSF DATA \| <---------------------------------------------------------+
	* \| \|
	* +------------+
	* \| \|
	* \| Fill Data \|
	* \| \|
	* +------------+ + CSF_PAD_SIZE
	*/

	__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
	{
	typedef void __noreturn (*image_entry_noargs_t)(void);
	uint32_t offset;

	image_entry_noargs_t image_entry =
	(image_entry_noargs_t)(unsigned long)spl_image->entry_point;

	debug("image entry point: 0x%lX\n", spl_image->entry_point);

	if (spl_image->flags & SPL_FIT_FOUND) {
	image_entry();
	} else {
	/*
	* HAB looks for the CSF at the end of the authenticated
	* data therefore, we need to subtract the size of the
	* CSF from the actual filesize
	*/
	offset = spl_image->size - CONFIG_CSF_SIZE;
	if (!imx_hab_authenticate_image(spl_image->load_addr,
	offset + IVT_SIZE +
	CSF_PAD_SIZE, offset)) {
	image_entry();
	} else {
	puts("spl: ERROR: image authentication fail\n");
	hang();
	}
	}
	}

	ulong board_spl_fit_size_align(ulong size)
	{
	/*
	* HAB authenticate_image requests the IVT offset is
	* aligned to 0x1000
	*/

	size = ALIGN(size, 0x1000);
	size += CONFIG_CSF_SIZE;

	return size;
	}

	void board_spl_fit_post_load(ulong load_addr, size_t length)
	{
	u32 offset = length - CONFIG_CSF_SIZE;

	if (imx_hab_authenticate_image(load_addr,
	offset + IVT_SIZE + CSF_PAD_SIZE,
	offset)) {
	puts("spl: ERROR: image authentication unsuccessful\n");
	hang();
	}
	}

	void* board_spl_fit_buffer_addr(ulong fit_size, int bl_len)
	{
	int align_len = ARCH_DMA_MINALIGN - 1;

	/* Some devices like SDP, NOR, NAND, SPI are using bl_len =1, so their fit address
	* is different with SD/MMC, this cause mismatch with signed address. Thus, adjust
	* the bl_len to align with SD/MMC.
	*/
	if (bl_len < 512)
	bl_len = 512;

	return (void *)((CONFIG_SYS_TEXT_BASE - fit_size - bl_len -
	align_len) & ~align_len);
	}
	#endif

	#if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
	int dram_init_banksize(void)
	{
	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
	gd->bd->bi_dram[0].size = imx_ddr_size();

	return 0;
	}
	#endif